<template>
	<div class="login_container">
		<div class="login_box">
			<!-- 头像区域 -->
			<div class="avatar_box">
				<img src="../assets/logo.png" alt="">
			</div>
			<!-- 登录表单区域 -->
			<el-form ref="loginFormRef" :model="loginForm" :rules="loginFromRules" label-width="0px" class="login_form">
				<!-- 用户名 -->
				<el-form-item prop="username">
					<el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
				</el-form-item>
				<!-- 密码 -->
				<el-form-item prop="password">
					<el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
				</el-form-item>
				<el-form-item class="btns">
					<el-button type="primary" @click="login">登录</el-button>
					<el-button type="info" @click="resetLoginForm">重置</el-button>
				</el-form-item>
			</el-form>
		</div>
	</div>
</template>

<script>
	export default {
		data(){
			return{
				loginForm:{
					username:'admin',
					password:'123456'
				},
				loginFromRules:{
					// 验证用户名
					username:[
						{ required: true, message: '请输入登录名称', trigger: 'blur' },
						{ min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
					],
					// 验证密码
					password:[
						{ required: true, message: '请输入登录密码', trigger: 'blur' },
						{ min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
					]
				}
			}
		},
		methods:{
			// 重置表单内容
			resetLoginForm(){
				this.$refs.loginFormRef.resetFields()
			},
			login(){
				this.$refs.loginFormRef.validate(async valid => {
					if(!valid) return false
					const res = await this.$http.post('login', this.loginForm)
					if(res.data.meta.status !== 200) return this.$message.error('登录失败')
					this.$message({
						message:'登录成功',
						type:'success'
					})
					// console.log(res.data)
					// 将登陆后的 token（令牌）保存到客户端的sessionStorage中
					sessionStorage.setItem('token', res.data.data.token)
					// 登录后导航到 /home 主页
					this.$router.push('/home')
				})
			}
		}
	}
</script>

<style Lang="less" scoped>
	.login_container{
		background-color: #2B4B6B;
		height: 100%;
	}
	.login_box{
		width: 450px;
		height: 300px;
		background-color: #fff;
		border-radius: 3px;
		position: absolute;
		left: 50%;
		top: 50%;
		transform: translate(-50%,-50%);
	}
	.avatar_box{
		height: 130px;
		width: 130px;
		border:1px solid #eee;
		border-radius: 50%;
		padding: 10px;
		box-shadow: 0 0 10px #ddd;
		position: absolute;
		left: 50%;
		transform: translate(-50%,-50%);
		background-color: #fff;
	}
	img{
		width: 100%;
		height: 100%;
		border-radius: 50%;
		background-color: #eee;
	}
	.login_form{
		position: absolute;
		bottom: 0;
		width: 100%;
		padding: 0 20px;
		box-sizing: border-box;
	}
	.btns{
		display: flex;
		justify-content: flex-end;
	}
</style>
